<div id="linghtsTwo">
	<div class="colorLightsone">
		<fieldset>
			<legend >Ⅰ系</legend>
					<select class="dengone" onchange="optionChange(this)">
						<option value=""></option>
					</select>
		</fieldset>
	</div>
	<div id="blockSwitch">信号</div><!-- 平调信号 -->
	<div class="colorLightstwo">
		<fieldset>
			<legend >Ⅱ系</legend>
					<select class="dengtwo" onchange="optionChange(this)">
						<option value=""></option>
									</select>
					</fieldset>
	</div>
</div>